Optional dynamic bandwidth allocation based on playback tunnel to support video-on-demand service in virtual private networks

L. Zhang, H. Fu

    Research output: Contribution to journalArticlepeer-review

    Abstract

    This paper focuses on the optional dynamic bandwidth allocation (ODBA) scheme to support video-on-demand (VoD) services in virtual private networks (VPN). Firstly, an approach based on playback tunnel is proposed to determine a feasible range of bandwidth used for dynamic bandwidth allocation to transport video segments with the guarantee that the playback buffer neither underflows nor overflows. Secondly, optional DBA schemes including left-edge DBA, right-edge DBA, middle-tunnel DBA (MT-DBA) and reduced-bandwidth-variability DBA (RBV-DBA) are investigated extensively. The proposed schemes are evaluated by a set of real-life MPEG video traces. The obtained results show that the RBV-DBA scheme outperforms other schemes in terms of reducing peak rate, traffic burstiness and bandwidth variability. On the other hand, the MT-DBA scheme can effectively avoid the playback buffer overflow and underflow.

    Original languageEnglish
    Pages (from-to)1019-1030
    Number of pages12
    JournalComputer Communications
    Volume24
    Issue number11
    DOIs
    Publication statusPublished - Jun 15 2001

    Keywords

    • Internet
    • Multimedia networking
    • Network bandwidth allocation
    • Network multiplexing gain
    • Quality of service
    • Video-on-demand
    • Virtual private networks

    ASJC Scopus subject areas

    • Computer Networks and Communications

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